// ============================================================================
//
// Copyright (C) 2006-2007 Dengues
//
// Google Group: http://groups.google.com/group/dengues
// QQ Group: 24885404
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// ============================================================================
package org.dengues.designer.ui.properties;

import org.dengues.designer.ui.editors.DatabaseMultiEditor;
import org.dengues.designer.ui.editors.ProcessMultiEditor;
import org.eclipse.gef.EditPart;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.views.properties.tabbed.ITabbedPropertySheetPageContributor;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage;

/**
 * Qiang.Zhang.Adolf@gmail.com class global comment. Detailled comment <br/>
 * 
 * @since 2007-11-1 下午08:28:14
 */
public class DenguesEditorTabbedPropertySheetPage extends TabbedPropertySheetPage {

    StructuredSelection oldSelection;

    /**
     * Qiang.Zhang.Adolf@gmail.com DenguesEditorTabbedPropertySheetPage constructor comment.
     * 
     * @param tabbedPropertySheetPageContributor
     */
    public DenguesEditorTabbedPropertySheetPage(ITabbedPropertySheetPageContributor tabbedPropertySheetPageContributor) {
        super(tabbedPropertySheetPageContributor);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage#selectionChanged(org.eclipse.ui.IWorkbenchPart,
     * org.eclipse.jface.viewers.ISelection)
     */
    @Override
    public void selectionChanged(IWorkbenchPart part, ISelection selection) {
        ISelection newSelection;
        if (part instanceof DatabaseMultiEditor) {
            DatabaseMultiEditor multiEditor = (DatabaseMultiEditor) part;
            newSelection = multiEditor.getGefDBEditor().getViewer().getSelection();
        } else if (part instanceof ProcessMultiEditor) {
            ProcessMultiEditor multiEditor = (ProcessMultiEditor) part;
            newSelection = multiEditor.getGefCompEditor().getViewer().getSelection();
        } else {
            return;
        }
        if (selection instanceof StructuredSelection) {
            StructuredSelection structSel = (StructuredSelection) newSelection;
            if (structSel.size() != 1) {
                return;
            }
            if (structSel.getFirstElement() instanceof EditPart) {
                if (!structSel.equals(oldSelection)) {
                    super.selectionChanged(part, selection);
                }
                oldSelection = structSel;
            }
        }
    }

}
